Not So Strait is the Gate in Bravais' Hidden Study

Unlock Bravais' Secret Study by forging Arkhium Lumenite and get the Not so Strait is the Gate achievement in Genshin Impact 4.1. See the secret study's Fontaine location, how to forge the mysterious ores, and what to get inside!

Bravais' Hidden Study Location

South of the Fontaine Research Institute

Bravais' study is located southeast of the Experimental Field Generator boss in Fontaine, in a hole west of the Teleport Waypoint in Fontaine Research Institute Region.

Fontaine Research Institute Map Guide

How to Unlock Bravais' Hidden Study

Obtain Seven Mysterious Ores

To unlock the secret study, you must first collect seven Mysterious Ores all over Fontaine. You can get a Mysterious Ore through the Road to the Singularity quest, Unfinished Comedy quest, and Treacherous Light of the Depths quest.

You can also get a Mysterious Ore by destroying the Thorny Cyst found in an underwater cavern south of Mont Esus East. Three more Mysterious Ores can be found in Fontaine through exploration.

All Mysterious Ore Locations

Get Arkhium Stock From the Mysterious Ores

Once you've collected all Mysterious Ores, they will automatically turn into the Arkhium Stock. This can then be used in the Forging Press to create Akhium Lumenite.

Arkhium Stock Location

Go to the Forging Press in the Submerged Stony Path

To head to the Submerged Stony Path, you can go through the Millennial Pearl Seahorse's arena and go towards the back where a body of water is located. Dive into the water and follow the path south until you reach the Forging Press.

How to Solve the Forging Press Puzzle

Create the Arkhium Lumenite in the Forging Press

Once you get to the Forging Press, you can start forging the Arkhium Lumenite with the following steps:

How to Forge Akhium Lumenite Summary

#	Objectives
1	Input the Arkhium Stock into the center of the machine.
2	Turn off all three steam pipes underneath the area using the Handwheels to ensure the pipe pressure is normal.
3	Activate the Power Supply System and start forging. When the Arkhium Stock starts glowing brighter, select the "Press" option.
4	Decrease the heat by defeating Pyro Slimes and using Hydro on the Forging Press.
5	Drop down to the ground and break a rock pile where a Hydroculus is located, east from the center of the machine, to fix the Cooling System.
6	Continue forging until another error appears.
8	Dive under the flooded area and get Xenochromatic Hunter's Ray Ability, then free the Xenochromatic Jellyfish from the seaweeds.
10	Destroy all Red Meanies by the two vents southeast and southwest of the area. Each batch of Meannies must be defeated at the same time.
11	Return to the second mechanism and activate Emergency Drainage Function.
12	Continue forging until you trigger a cutscene.
13	Obtain the Arkhium Lumenite from the now-flooded area.

Use Arkhium Lumenite on the Locked Door

After obtaining the Arkhium Lumenite, you can go back to the locked door southeast of the Experimental Field Generator boss, and interact with the mechanism to open the study! Doing so will grant you the Achievement titled Not so Strait is the Gate.

What to Find Inside Bravais' Hidden Study?

Hydroculus on the Ceiling

Inside Bravais' Secret Study are old notes, a Luxurious Chest, a Golden Bird's Shedding artifact and a Hydroculus up in the ceiling! You can climb the wall and get to the rafters to reach the Hydroculus.

4.1 Hydroculus Locations

Drained Conch Cup Inside A Luxurious Chest

Jump From the Ceiling to Reach the Room

There will also be a transparent wall with a Precious Chest and a Luxurious Chest inside. To get here, climb the walls again and jump from the ceiling into the room. You can use the mechanism inside to remove the walls.

In the Luxurious Chest is a Drained Conch Cup, similar to the ones you obtain from the Aqueous Tidemarks, and the Ann of the Narzissenkreuz questlines!

Drained Conch Cup Locations

Genshin Impact Related Guides

Fontaine Map Guide

Fontaine Area Map Guides

Related Fontaine Map Guides
Liffey Region	Fontaine Research Institute
Fortress of Meropide	Merusea Village
Narzissenkreuz Ordo	Erinnyes
Morte Region	Tower of Gestalt
Nostoi Region	Sea of Bygone Eras

Fontaine Exploration Guides

Fontaine Exploration Guides
Diving Mechanic Guide	Underwater Area Guide
Fontaine Commission	Fontaine Reputation
Fontaine Craftable Weapons	Pneuma and Ousia
Local Legends	Xenochromatic Creatures
Ancient Symphony

Significant Fontaine Location Guides

Fontaine Location Guides
Hydroculus	Fountain of Lucine	Shrine of Depths	Enigmatic Page
Teleport Waypoints	Treasure Chests	Remarkable Chests	Secret Treasure Map

Fontaine Item Guides

Fontaine Local Specialties
Rainbow Rose	Lumidouce Bell	Romaritime Flower	Beryl Conch
Subdetection Unit	Lumitoile	Lakelight Lily	Spring of the First Dewdrop
Other Items Found in Fontaine
Tidalga	Marcotte	Pluie Lotus	Bulle Fruit
Condessence Crystal	Ancient Key	Drained Conch Cup	Mysterious Core
Hydro Sigil	Strange Part	Key to Some Place	Credit Coupons
Energy Concentrating Component	Mysterious Ore	Arkhium Ore	Arkhium Lumenite
Spur Gears	Welfare Meal	Handwheel	Punched Tapes
Foggy Forest Branch	Simple Vault Key	Autumn's Map	Rocky's Map
Liam's Map	Rouge's Map	Barrow Map	Parker's Hopes Map
Athos Map	Freeman Map

Fontaine Domain Guides

Fontaine Domains Guides
Denoument of Sin	Echoes of the Deep Tides
Pale Forgotten Glory	Waterfall Wen
Faded Theater

All Fontaine Domains and Locations

Fontaine Quest Guides

Ancient Colors Quest Chain
A Brush of Seafoam and Crimson	A Gradient of Dreams and Ochre
Blue Longing of Heart and Moon
Ann of the Narzissenkreuz Quest Chain
The Narzissenkreuz Adventure	Kingdom Through the Looking-Glass
“If She No Longer Dreams of You...”
Unfinished Comedy Quest Chain
Game of the Rich	An Eye for An Eye
Hereafter...	Scenes From Life in Meropide
In the Wake of Narcissus Quest Chain
Search in the Algae Sea	Muse's Mother
Meteoric Lance	Cupid's Lover
Thalia and Melpomene	Savior's Wake
Waking From the Great Dream	Rowboat's Wake
The Wild Fairy of Erinnyes Quest Chain
Foggy Forest Path	Wilting Weeping Willow
Furious Mouth of the Spring	Within the Depths of Erinnyes
Questioning Melusine and Answering Machine Chain
Vagrants and Scamps	The Red and the Black
Questions and Answers
Canticles of Harmony Quest Chain
The Shadow Over Petrichor	Underwater Nocturne
The Last Day of Remuria	Gradus ad Capitolium
Fortune Plango Vulnera	For Yesterday and Tomorrow
Erinnyes Region World Quests
Impromptu Poem of the Crimson Dawn	Free Verse
Morte Region World Quests
Wish-Fulfilling Treasure Hunt
Liffey Region World Quests
In Search of Lost Time	Our Purpose is in Another Canal
Both Brains and Brawn
Fontaine Research Institute Region
Fontaine Research Institute Chronicles	Road to the Singularity
A Letter	Treacherous Light of the Depths
Villains	An Expected Plan
An Expected Lie
Belleau Region World Quests
Still Mouthwatering!	Truly Mouthwatering!
Beryl Region World Quests
Book of Esoteric Revelations	Echoes of the Ancient World
Fishing Game	Good Stuff, but Terrible Taste
The Lone Phantom Sail	The Three Primary Colors of the Solar Corona
Were It So Easy	Strange Stone Chronicle
This Isn’t Pumpkin Soup…	Pursuit
Through the Looking Glass
Court of Fontaine Region World Quests
Another Horizon of Adventure	A Certain Notice
A Certain Trifle	A Certain Stamp
A Fontanian Message	Ann's Story: Prologue
Aqueous Tidemarks	Danger Lurks Everywhere in Fontaine
In Expert Company Part 1	In Expert Company Part 2
Self-Automatic Foraging	Seymour's Story: Prologue
Steambird Interview	The Final Question
The Fountain Flows Again	Unfinished Story
Upon a Flowery Field of Grass	Initial Facts
Happy Birthday	Where His Life Lies

Fontaine World Quests

4.6 Fontaine Puzzles and Features

4.6 Fontaine Features
Washer Octopus	Lost Grimoires and Mysterious Bookshelves
Wonderchime Flowers and Allochromatic Anemones	Summon Currents with Scylla
Music Score Locations	Auric Anglerfish
Break the Chains that Bind Scylla	Portus Anticus Luxurious Chest
The Flying Outlander Achievement Guide	Juliano's Hidden Chests
How to Pet Osse

4.2 Fontaine Puzzles and Features

4.2 Fontaine Features
Humongous Hat Jellyfish	Potential Energy Orbs
Operable Mechanisms	Reveal the Altar's Secrets
Pahsiv Shop	Decode This Level's Puzzle
Mary-Ann Brainstorming Answers	Salvage the Lost Items
Looking Glass Locations	Permingeat's Questions and Answers
Contaminated Bacterial Mats	How to Solve Dew Bubbles and Branches
How to Operate Dangerous Autocannons	Harmonious Reed Pipes
Floating Crystal Flowers and Platforms

4.1 Fontaine Puzzles and Features

4.1 Fontaine Features
Searchlight's Detection Range	Gear Drain Valves
Recover the Condensing Components	Central Laboratory Ruins Seelie Puzzle
How to Destroy the Thorny Cyst	How to Go to the Abandoned Production Zone
How to Solve the Forging Press Puzzle	How to Unlock Bravais' Secret Study
Strange Eels	Allogravity-Condensed Water Bodies
Red Meanies	Stabilizer
Drive Valve to Supply Warehouse 1	Flying Energy Thief
Experimental Focusing Mirror Puzzle	Cipher Letters
Energy Transfer Terminals	Fixed Storage and Energy Transfer Device
How to Retrieve All 4 Replica Anchors	How to Start the Optical Device
Retrieve the Anchor at the Institute Dormitories	Retrieve the Anchor at the Institute of Clockwork Applications
Remains of the Day Secret Achievement and Chest	Water Barrier Seelie
Rag and Bone Shop

4.0 Fontaine Puzzles and Features

4.0 Fontaine Features
Fontaine Aquabus Guide	Court of Fontaine Waypoints Unlock Guide
Heart Plant Co-Op Hidden Chest	Sonar Resonance Points
Underwater Currents	High-Pressure Water Vents
Recovery Orb	Fontaine Echoing Conch
Fantastical Floating Ball	Pneumosia Blocks
Miraculous Hydrograna	Beastly Rifts
Bullet Barnacles	Fontaine Aircrafts Guide
The Prism in Elynas	Water Volume Detection Crystal
Pneumousia Relay Guide	Pneumousia Storage Box
Sunken Objects	Scenic Attractions
Adjust the Prism	Berrypuff Hidden Quest
Locked Underwater Dome	Break the Treasure Seal
Break the Bubble Formations

Fontaine Enemies

Fontaine Boss Guides
Emperor of Fire and Iron	Icewind Suite	Millennial Pearl Seahorse
Experimental Field Generator	Hydro Tulpa	Statue of Marble and Brass
All-Devouring Narwhal	The Knave
Fontaine Enemy Guides
Fontemer Aberrants	Tainted Hydro Phantasm	Breacher Primus
Clockwork Meka	Fatui Operatives	Praetorian Golem
Local Legends Guides
Iron Viscount	Fairy Knight Twins	Ocean Circuit Judge
Vivianne of the Lake	Fading Veteran	Swords of the Gorge
Ninianne of the Lake	Dobharcu, Lord of the Hidden	Automated Supercomputing Field Generator
Luachra the Brilliant	Yseut	Liam
Rocky Avildsen	Mageblade Corrouge	Chassanion
Deianeira of Snezhevna	Cineas

All Interactive Map Guides

All Interactive Map Guides